Remove the last remnants of the Obj-C EH stack code.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64205 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CodeGenFunction.cpp b/lib/CodeGen/CodeGenFunction.cpp
index 153fcc8..827ad6c 100644
--- a/lib/CodeGen/CodeGenFunction.cpp
+++ b/lib/CodeGen/CodeGenFunction.cpp
@@ -24,7 +24,7 @@
 
 CodeGenFunction::CodeGenFunction(CodeGenModule &cgm) 
   : CGM(cgm), Target(CGM.getContext().Target), SwitchInsn(NULL), 
-    CaseRangeBlock(NULL), StackDepth(0) {
+    CaseRangeBlock(NULL) {
     LLVMIntTy = ConvertType(getContext().IntTy);
     LLVMPointerWidth = Target.getPointerWidth(0);
 }